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# Leah Ch.2

Question | Answer |
---|---|

Commutative Property | a+b=b+a and ab=ba order doesn't matter |

Associative Property | a+ (b+c) = (a+b)+c and a(bc)= (ab)c grouping doesn't matter |

Identity Property | a+0=a and 1(a)=a The number added or multiplied that allows me to get back to the original # |

Distributive Property | a(b+c)= ab+ac |

term | any number or variable connected by the addition or multiplication symbol |

Like terms | terms that contain the same variable(s) |

Variable term | any term that contains a variable |

Numeric term | any term only made up of numbers |

Constant | a term that has no variable |

Open sentence | an equation that contains a variable |

Inequality | mathematical statement containing <,>, ≠, ≤,≥ |

Open Circle | number not included in our answer <,> |

Closed circle | the number is included in our answer =, ≤,≥ |

Solving equations | Inverse of adding/subtracting and inverse of multiplication/dividing |

Solving inequalities | when we multiply or divide by a negative number, we reverse the inequality sign |

-x means | -1x |

x means | 1x |

2x-3y+5-5x+2y-8 | 2x+(-5x) -3y+2y 5-8 -3x -1y -3 -3x-1y-3 |

3(2x-4) | 3(2x) 3(-4) 6x-12 |

-(2x-4) | -1(2x) -1(-4) -2x+4 |

3(2x-4)-3(x-2) | 3(2x) 3(-4) -3(1x) -3(-2) 6x-12-3x+6 3x-6 |

Created by:
wimmerleah